Contrary to popular belief, antibiotics have no effect on a virus. Most antibiotics interfere with the reproduction of bacteria, hindering their creation of new genetic instructions or new cell walls. Because viruses do not carry out their own biochemical reactions, antibiotics do not affect them.
With bacteria interference of its metabolism is caused by hindering specific enzymes in its cells.
viruses do have enzymes but they are not initiated until a host cell is found, by this time it is to late.
the only point at which a virus can be successfully attacked is once it has infected the host cell, however as earlier mentioned this is not a good idea, killing the host cell can be just as detrimental as allowing the virus to spread.
a better option in limiting a viruses effect is immunisation, remember, prevention is better than cure.
blah blah blah blah blah blah..... i'm so lonely..heh
hope that helps folks